ML20058G591

Amends 173 & 164 to Licenses DPR-77 & DPR-79,respectively, Revising TS Loading Requirements for Emergency Diesel Generator Surveillance Tests

ML20058G591
Person / Time
Site:	Sequoyah
Issue date:	11/29/1993
From:	Hebdon F Office of Nuclear Reactor Regulation
To:
Shared Package
ML20058G596	List: ML20058G591 ML20058G602
References
NUDOCS 9312090308
Download: ML20058G591 (14)

Text

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1. 1 UNITED STATES

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NUCLEAR REGULATORY COMMISSION 2

WASHING GN. D.C. 20656-0001 i

%.....,e TENNESSEE VALLEY AUTHORITY DOCKET NO. 50-327 SE000YAH NUCLEAR PLANT. UNIT 1 AMENDMENT TO FACILITY OPERATING LICENSE I'

Amendment No.173 License No. DPR-77 1.

The Nuclear Regulatory Commission (the Commission) has found that:

A.

The application for amendment by Tennessee Valley Authority!(the-

~

licensee) dated September 27, 1993, complies with the standards and r

requirements of the Atomic Energy Act of 1954, as amended (the Act),

and the Commission's rules and regulations set forth in 10 CFR Chapter I B.

The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; j

C.

There is reasonable assurance (1) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Commission's. regulations; t

D.

The issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public; and E.

The issuance of this amendment is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have j

been satisfied.

i 9312090308 931129 PDR ADOCK 05000327 1

P PDR

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- r 2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this. license amendment and paragraph 2.C.(2) of Facility Operating License No. DPR-77 is hereby amended to read as follows:

F (2) Technical Specifications The Technical Specifications contained in Appenclices A and 3, as revised through Amendment No.173, are hereby incorporated in the license. The licensee shall operate the facili'4y in accordance with l

the Technical Specifications.

l t

3.

Thi: license amendment is effective as of its date of issuance, to be l

implemented for the next scheduled appropriate test of each emergency die:el generator.

FOR THE NUCLEAR REGULATORY COMMISSION j

Y Frederick J. Hebdon, Director Project. Directorate II-4 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance: 11/29/93 i

I

I ATTACHMENT TO LICENSE AMENDMENT NO. 173 FACILITY OPERATING LICENSE NO. DPR-77 DOCKET NO. 50-327 l

Revise the Appendix A Technical Specifications by removing the pages identified below and inserting the enclosed pages. The revised-pages are identified by the captioned amendment number and contain marginal lines indicating the area of change.

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REMOVE INSERT 3/4 8-3 3/4 8-3 i

j 3/4 8-5 3/4 8-5 B3/4 8-1 B3/4 8-1 B3/4 8-la i

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ELECTRICAL POWER SYSTEMS j

i

{

SURVEILLANCE REOUIREMENTS (Continued 1 4.8.1.1.2 Each diesel generator set shall be demonstrated OPERABLE:

-l a.

In accordance with the frequency specified in Table 4.8-1 on a j

j STAGGERED TEST BASIS by:-

4 1.

Verifying the fuel level it. the engine-mounted _ day tanks.

f 2.

Verifying the fuel level in the 7 day tank.

j 3.

Verifying the fuel transfer pump can be started and transfers

~

fuel from the storage system to the engine mounted fuel tanks.

4.

• Verifying the diesel starts-from ambient condition and accele-l rates to at least 900 rpm in less_ than or equal to 10 seconds.

1 d

The generator voltage and frequency shall. be 6900 i 690 volts and 60 t 1.2 Hz within.10 seconds after the start signal. The diesel generator shall be started for this test by using one of the following signals with startup on each signal verified at i

least once per 124 days.

j a)

Manual, b)

Simulated-loss of offsite power by-itself.

c)

An ESF actuation test signal by itself.

1 5.

• Verifying the generator is synchronized, loaded between 3960 kw and 4400 kw in less than or equal to 60 seconds, and operates for greater than or equal to 60 minutes, and-l 6.

Verifying the diesel generator is aligned to provide standby

[

l power to the associated shutdown boards.

b.

At least once per 31 days and after each operation of the diesel where the period of operation was_ greater than or equal to I hour by checking for and removing accumulated water from the engine-mounted l

fuel tanks.

-j c.

At least once per 92 days and from new fuel _ oil prior to addition to

)

the 7-day tanks by verifying that a sample obtained in accordance

'l with ASTM-D270-1975 has a water and sediment content of less than or equal to.05 volume percent and a kinematic viscosity 9 100*F of-greater than or equal to 1.8 but less than or equal to 5.8 centi-stokes when tested in accordance with ASTM-D975-77, and an impurity-

'3 level of less than 2 mg. of insolubles per 100 ml.'when tested in -

l accordance with ASTM-D2274-70.

l

• The diesel generator start (10 sec) and load (60 sec) from. standby conditions shall be performed at least once per 184 days in these surveillance tests.

All other diesel generator engine starts and loading.for the purpose of this-surveillance testing may be preceded by an engine idle start, followed by-gradual acceleration to synchronous speed (900 rps), synchronization, and gradual loading.

SEQUOYAH - UNIT 1 3/4 8-3 Amendment No. 52,64,99,109,137,-

173 3

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ELECTRICAL POWER SYSTEMS SURVEILLANCE REOUIREMENTS (Continued) c)

Verifying that all automatic diesel generator trips, except engine overspeed and generator differential, are automati-cally bypassed upon loss of voltage on the shutdown board and/or safety injection actuation signal.

i 7.

Verifying the diesel generator operates for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to 2.25 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> of this test, the diesel generator shall be loaded between 4620 kw and 4840 kw and between 2380 kvar and 2600 kvar and during the remaining hours of this test, the diesel generator shall be loaded between 3960 kw and 4400 kw and between 2140 kvar and 2370 kvar.

The generator voltage and frequency shall be 6900 i 690 volts and 60 i 1.2 Hz within 10 seconds after the start signal; the steady state generator voltage and frequency shall be maintained within these limits during this test. Within 5 minutes after completing this 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test, perform Specification 4.8.1.1.2.d.4.b.

8.

Verifying that the auto-connected loads to each diesel generator do not exceed the continuous rating of 4400 kw.

9.

Verifying the diesel generator's capability to:

a)

Synchronize with the offsite power source while the genera-tor is loaded with its emergency loads upon a simulated restoration of offsite power.

b)

Transfer its loads to the offsite power source, and c)

Be restored to its shutdown status.

10. Verifying that the automatic load sequence timers are OPERABLE i

with the setpoint for each sequence timer within i 5 percent of its design setpoint.

11. Verifying that the following diesel generator lockout features prevent diesel generator starting only when required:

a)

Engine overspeed b) 86 GA lockout relay e.

At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting the diesel generators simultaneously, during shutdown, and verifying that the diesel generators accelerate to at least 900 rpm in less than'or equal to 10 seconds.

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SEQUOYAH - UNIT 1 3/4 8-5 Amendment No. 52,64,109,114,137, 173

t 3/4.8 ELECTRICAL POWER SYSTEMS l

BASES 3/4.8.1 and 3/4.8.2 A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS The OPERABILITY of the A.C. and D.C power sources and associated distri-bution systems during operation ensures that sufficient power will be available to supply the safety related equipment required for 1) the safe shutdown of the facility and 2) the mitigation and control of accident conditions within the facility. The minimum specified independent and redundant A.C. and D.C. power i

sources and distribution systems satisfy the requirements of General Design i

Criteria 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensur-I ate with the level of degradation. The OPERABILITY of the power sources are consistent with the initial condition assumptions of the accident analyses and j

are based upon maintaining at least on.e redundant set of onsite A.C. and D.C.

j power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure j

of the other onsite A.C. source.

I Additional ACTION requirements are specified for performance of the chemi-cal clearing required by Surveillance Requirement 4.8.1.1.2.f.l.

The motor-driven fuel pumps for the diesel generater set with the tanks being cleaned

+

will be temporarily connected to the uncerground storage tanks for the other diesel generator set with the same train designation. An additional fal-oil inventory of approximately 68,000 gallons will be available in one of the yard storage tanks prior to the start of the chemical cleaning of any underground storage tank. Within practical limits, the chemical cleaning of an underground storage tank will be performed during a refueling or other scheduled outage for the associated unit.

The OPERABILITY of the minimum specified A.C. and D.C. power sources and associated distribution systems during shutdown and refueling ensures that 1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the unit status.

The Surveillance Requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory Guides 1.9 " Selection of Diesel Generator Set Capacity for Standby Power Sup-plies," March 10,1971, and 1.108 " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977, and 1.137 " Fuel-011 Systems for Standby Diesel Generators," Revi-sion 1, October 1979. The surveillance requirements for the diesel generator load-run test and the 24-hour endurance and margin test are in accordance with Regulatory Guide 1.9, Revision 3, July 1993, " Selection, Design, Qualification, and Testing of Emergency Diesel Generator Units Used as Class IE Onsite Elec-tric Power Systems at Nuclear Power Plants." During the diesel generator endurance and margin surveillance test, momentary transients outside the kw and kvar load ranges do not invalidate the test results.

Similarly, during the diesel generator load-run test, momentary transients outside the kw load range-do not invalidate the test results.

SEQUOYAH - UNIT 1 B 3/4 8-1 Amendment No. 12, 137, 173

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l ELECTRICAL POWER SYSTEMS BASES A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS (Continued)

The Surveillance Requirement for demonstrating the OPERABILITY of the Station batteries are based on the recommendations of Regulatory Guide 1.129

" Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978, and IEEE Std 450-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations."

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SEQUOYAH - UNIT I B 3/4 8-la Amendment No.173 l

?

DERECu

/

ft UNITED STATES

[ _ T *

j NUCLEAR REGULATORY COMMISSION l

2 WASHINGTON, D.C. 20E0001 l

s....+/

i TENNESSEE VALLEY AUTHORITY DOCKET NO. 50-328 SE000VAH NUCLEAR PLANT. UNIT 2 i

i l

l AMENDMENT TO FACILITY OPERATING LICENSE

?

i Amendment No.164 i

license No. DPR-79 1

I 1.

The Nuclear Regulatory Commission-(the Commission).has found that:

I A.

The application for amendment by Tennessee Valley _ Authority'(the j

licensee) dated September 27, 1993, complies with the-standards and requirements of the Atomic Energy Act of 1954, as amended (the Act),

and the Commission's rules and regulations set forth in 10 CFR.

Chapter I; i

B.

The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations ^of the Commission; j

C.

There is reasonable assurance (i)-that the activities' authorized by I

this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be-conducted in compliance with the Commission's regulations; D.

The issuance of this amendment will not be inimical to the common defense and security or to the health and safety. of the public; and-E.

The issuance of this amendment'is in accordance with 10 CFR Part 51 of the Commission's regulations and all applicable requirements have been satisfied.

l

l.

• t 1 :

i 2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment and paragraph 2.C.(2) of Facility Operating License No. DPR-79 is hereby amended to read as follows:

(2) Technical Specifications The Technical Specifications contained in Appendices A and B, as revised through Amendment No.164, are hereby incorporated in the license. The licensee shall operate the facility in accordance with r

the Technical Specifications.

3.

This license amendment is effective as of its date of issuance, to be implemented for the next scheduled appropriate test of each emergency.

diesel generator.

FOR THE NUCLEAR REGULATORY COMMISSION Sk Frederick J. Hebdon, Director Project Directorate II-4 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation P

Attachment:

Changes to the Technical Specifications Date of Issuance: November 29, 1993 t

I i

i

ATTACRMENT TO LICENSE AMENDMENT NO. 164 FACILITY OPERATING LICENSE NO. DPR-79 t

DOCKET NO. 50-328 Revise the Appendix A Technical Specifications by removing the pages identified below and inserting the enclosed pages. The revised pages are identified by the captioned amendment number and contain marginal lines indicating the area of change.

REMOVE INSERT 3/4 8-3 3/4 8-3 3/4 8-5 3/4 8-5 B3/4 8-1 B3/4 8-1 B3/4 8-la l

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i ELECTRICAL POWER SYSTEMS

[

SURVEILLANCE RE0VIREMENTS (Continued) 4.8.1.1.2 Each diesel generator set shall be demonstrated OPERABLE:

a.

In accordance with the frequency specified in Table 4.8-1 on a STAGGERED TEST BASIS by:

l.

Verifying the fuel level in the engine-mounted day tanks.

j 2.

Verifying the fuel level in the 7 day tank.

3.

Verifying the fuel transfer pump starts and transfers fuel from I

the storage system to the engine mounted fuel tanks.

4.

• Verifying the diesel starts from ambient condition and accele-rates-to at least 900 rpm in less than or equal to 10 seconds.

The generator voltage and frequency shall be 5900 1 690 volts-and 60 i 1.2 Hz within.10 seconds after the start signal. The diesel generator shall be started for this test by using one of the following signals with startup on each signal verified at-least once per 124 days:

a)

Manual.

b)

Simulated loss of offsite power by itself.

1 c)

An ESF actuation test signal by itself.

1 5.

• Verifying the generator is synchronized, loaded between 3960 kw and 4400 kw in less than or equal to 60 seconds, and operates for greater than or equal to 60 minutes, and 6.

Verifying the diesel generator is aligned to provide standby

.I power to the associated shutdown boards.

j i

b.

At least once per 31 days and after each operation of the diesel where the period of operation was greater than or equal to I hour by checking for and removing accumulated water from the engine-mounted fuel tanks.

c.

At least once per 92 days and from new fuel oil prior to addition to the 7-day tanks by verifying that a sample obtained in accordance with ASTM-D270-1975 has a water and sediment content of less than or equal to.05 volume percent and a kinematic viscosity 9100*F of greater than or equal to 1.8 but less than or equal to 5.8 centi-stokes when tested in accordance with ASTM-D975-77, and an impurity level of less than 2 mg. of insolubles per 100 ml. when tested-in accordance with ASTM-D2274-70.

• The diesel generator start (10 sec) and-load (60 sec) from standby conditions shall be performed at least once per 184 days in these surveillance tests.

All other diesel generator engine starts and loading for the purpose of this surveillance testing may be preceded by an engine idle start, followed by gradual acceleration to synchronous speed (900 rpm), synchronization, and

radual loading.

SEQUOYAH - UNIT 2 3/4 8-3 Amendment No. 44,56,88,99,123,-

164

ELECTRICAL POWER SYSTEMS SURVEILLANCE REOUIREMENTS (Continued) c)

Verifying that all automatic diesel generator trips, except engine overspeed and generator differential, are automati-cally bypassed upon loss of voltage on the shutdown board and/or safety injection actuation signal.

7.

Verifying the diesel generator operates for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to 2.25 hours2.893519e-4 days <br />0.00694 hours <br />4.133598e-5 weeks <br />9.5125e-6 months <br /> of this test, the diesel generator shall be loaded between 4620 kw and 4840 kw and between 2380 kvar and 2600 kvar and during the remaining hours of this test, the diesel generator shall be loaded between 3960 kw and 4400 kw and between 2140 kvar and 2370 kvar.

The generator voltage and frequency shall be 6900 i 690 volts and 60 i 1.2 Hz within 10 seconds after the start signal; the steady state generator voltage and frequency shall be maintained within these limits during this test. Within 5 minutes after completing this 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test, perform Specification 4.8.1.1.2.d.4.b.

8.

Verifying that the auto-connected loads to each diesel generator do not exceed the continuous rating of 4400 kw.

9.

Verifying the diesel generstor's capability to:

a)

Synchronize with the offsite power source while the genera-tor is loaded with its emergency loads upon a simulated restoration of offsite power.

b)

Transfer its loads to the offsite power source, and c)

Be restored to its shutdown status.

10. Verifying that the automatic load sequence timers are OPERABLE with the setpoint for each sequence timer within i 5 percent of its design setpoint.

11.

Verifying that the following diesel generator lockout features prevent diesel generator starting only when required:

a)

Engine overspeed b) 86 GA lockout relay e.

At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting the diesel generators simultaneously, during shutdown, and verifying that the diesel generators accelerate to at least 900 rpm in less than or equal to 10 seconds.

SEQUOYAH - UNIT 2 3/4 8-5 Amendment No. 41,56,123, 164

3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1 and 3/4.8.2 A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS The OPERABILITY of the A.C. and D.C power sources and associated distri-bution systems during operation ensures that sufficient power will be available to supply the safety related equipment required for 1) the srfe shutdown of the facility and 2) the mitigation and control of accident condit. ions within the facility. The minimum specified independent and redundant A.C. and D.C, power sources and distribution systems satisfy the requirements of General Design Criteria 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensur-ate with the level of degradation. The OPERABILITY of the power sources are consistent with the initial condition assumptions of the accident analyses and are based upon maintaining at least one redundant set of onsite A.C. and D.C.

power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other onsite A.C. source.

Additional ACTION requirements are specified for performance of the chemi-cal cleaning required by Surveillance Requirement 4.8.1.1.2.f.1.

The motor-driven fuel pumps for the diesel generator set with the tanks being cleaned will be temporarily connected to the underground stprage tanks for the other diesel generator set with the same train designation. An additional fuel-oil inventory of approximately 68,000 gallons will be available in one of the yard storage tanks prior to the start of the chemical cleaning of any underground storage tank. Within practical limits, the chemical cleaning of an underground storage tank will be performed during a refueling or other scheduled outage for the associated unit.

The OPERABILITY of the minimum specified A.C. and D.C. power snurces and associated distribution systems during shutdown and re7 eling ensures that 1) 9 the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and control capability is available for monitoring and maintaining the unit status.

The Surveillance Requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory Guides 1.9 " Selection of Diesel Generator Set Capacity for Standby Power Sup-plies," March 10,1971, and 1.108 " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977, and 1.137 " Fuel-0il Systems for Standby Diesel Generators," Revi-sion 1, October 1979. The surveillance requirements for the diesel generator load-run test and the 24-hour endurance and margin test are in accordance with Regulatory Guide 1.9, Revision 3, July 1993, " Selection, Design, Qualification, and Testing of Emergency Diesel Generator Units Used as Class IE Onsite Elec-tric Power Systems at Nuclear Power Plants." During the diesel generator endurance and margin surveillance test, momentary transients outside the kw and kvar load ranges do not invalidate the test results.

Similarly, during the diesel generator load-run test, momentary transients outside the kw load range do not invalidate the test results.

SEQUOYAH - UNIT 2 B 3/4 8-1 Amendment No. 123, 164

ELECTRICAL POWER SYSTEMS BASES A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS (Continued)

The Surveillance Requirement for demonstrating the OPERABILITY of the Station batteries are based on the recommendations of Regulatory Guide 1.129

" Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978, and IEEE Std 450-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations."

I

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i SEQUOYAH - UNIT 2 B 3/4 8-la Amendment No.164 l

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